| 摘要 |
PURPOSE: An expandable notebook capable of facilitating drawing figures or writing characters is provided to expand width of papers by needs. CONSTITUTION: An expandable notebook comprises a plurality of paper sheets(1), a binding portion(2) and a cover portion(3). The center of the plurality of paper sheets is folded through vertical perforated portions(11). At both sides of the paper, vertical cut-out portions(13) are formed to be separated from both end parts(12). In two part of the paper, the side vertical cut-out portions are formed to be separated from both end part. The binding portion binds an end part by laminating the plurality of paper sheets. The cover portion covers the binding portion and covers the upper and lower parts of the plurality of paper sheets. In both inner sides of the paper, a line pattern portion is additionally formed. The line pattern part is a standard for drawing figures or pictures. |
